I'm just fooling around with ideas for an Irregular, Rambling & Never-Get-There layout consisting of four NTRAK modules. Took some screenshots from Google Maps and very roughly laid it out.
The next 4' wide unit to the north would be Long Beach/Sea View. I'd use a deeper NTRAK module here so I could include the beach, and I'd add one of the shipwrecks for which the Washington coast was notorious.
The Northernmost module would be Oysterville/Ocean Park/Loomis. The Loomis mansion would be to the South, in the center on the far side of the tracks. A beached whale would be somewhere between Oysterville and Ocean Park.
If I decided to expand Eastward (as the line did in later years) I could add another 4' module of Chinook/Fort Columbia. There is a tunnel under Ft. Columbia -- I'm not sure if that's kosher by NTRAK rules.
This is just an idle fantasy at the moment, as I really don't even have room for the Ilwaco module in my apartment.